A: For the Nylon raw material is come from US. 210D. It is more durable than common Nylon.It has his own name is dacron. Dacron which is much better than nylon polyester. As the common Nylon in the sun for a long time will crack and corrosion that will not. Can be waterproof.

B: Inside plastic bag finished by pure PP. It is the fourth generation of modified plastics. Even if it is folded in half will not be broken.